Topic 10: Organic Chemistry 10.6 Reaction Pathways Reaction pathways pertain to the individual steps required to get from one organic functional group to the other. Types of Reaction Pathways for Organic Chemistry: 1. Addition Reaction 2. Free Radical Substitution Reaction 3. Nucleophilic Substitution Reaction 4. Addition Reaction 5. Oxidation Reaction CONVERSIONS WITH MORE THAN TWO STAGES WILL NOT BE ASSESSED. REAGENTS, CONDITIONS AND EQUATIONS SHOULD BE INCLUDED. For example, the conversion of but-2-ene to butanone can be done in two stages: but-2-ene can be heated with steam and a catalyst to form butan-2-ol, which can then be oxidized by heating with acidified potassium dichromate (VI) to form butanone.